I'm working with WebStorm and there is only two possibilities to use ESLint :
Isn't there a possibility to apply ESLint to a selection of multiple lines ?
There is no way to apply ESLint fix to selection in WebStorm, ESLint itself doesn't support range formatting/fixing. But you can import your code style preferences from .eslintrc
and then use the built-in formatter (Code | Reformat Code) to format the selection.
Note also that you can set up Prettier as your default formatter and then use it to format a selection with Code | Reformat Code